Expanding the quantum photonic toolbox in AlGaAsOI
Expanding the quantum photonic toolbox in AlGaAsOI
复制标题
DOI：
10.1063/5.0098984
复制
发表时间：
2022-05
期刊：
影响因子：
5.6
通讯作者：
J. E. Castro;T. Steiner;L. Thiel;A. Dinkelacker;C. Mcdonald;P. Pintus;L. Chang;J. Bowers
中科院分区：
文献类型：
--
作者：
J. E. Castro;T. Steiner;L. Thiel;A. Dinkelacker;C. Mcdonald;P. Pintus;L. Chang;J. Bowers
绝缘体上砷化铝镓（AlGaAsOI）具有大的[公式：见文]和[公式：见文]光学非线性、宽可调带隙、低波导传播损耗和大热光系数，使其成为令人兴奋的集成量子光子学平台。在AlGaAsOI中建立了超亮量子光源后，下一步是开发芯片级量子光子电路的关键构建模块。在这里，我们通过展示边缘耦合器，3db分路器，可调谐干涉仪和波导交叉，扩展了AlGaAsOI的量子光子工具箱，其性能与硅和氮化硅量子光子平台相当或超过。作为演示，我们通过非平衡干涉仪实现了光子量子比特的多路解耦，为光子量子计算和信息应用的超高效和高速率芯片级演示铺平了道路。
Aluminum gallium arsenide-on-insulator (AlGaAsOI) exhibits large [Formula: see text] and [Formula: see text] optical nonlinearities, a wide tunable bandgap, low waveguide propagation loss, and a large thermo-optic coefficient, making it an exciting platform for integrated quantum photonics. With ultrabright sources of quantum light established in AlGaAsOI, the next step is to develop the critical building blocks for chip-scale quantum photonic circuits. Here we expand the quantum photonic toolbox for AlGaAsOI by demonstrating edge couplers, 3 dB splitters, tunable interferometers, and waveguide crossings with performance comparable to or exceeding silicon and silicon-nitride quantum photonic platforms. As a demonstration, we de-multiplex photonic qubits through an unbalanced interferometer, paving the route toward ultra-efficient and high-rate chip-scale demonstrations of photonic quantum computation and information applications.